Accreting black holes in dark matter halos

被引：2
作者：
Kazempour, Sobhan [1 ]
Sun, Sichun [1 ]
Yu, Chengye [1 ]
机构：
[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
来源：
PHYSICAL REVIEW D | 2024年 / 110卷 / 04期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
EVENT-HORIZON-SCALE; DISC LUMINOSITY; GALAXIES; CONSTANT;
D O I：
10.1103/PhysRevD.110.043034
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We examine the thin accretion disk behaviors surrounding black holes embedded in cold dark matter halos and scalar field dark matter halos. We first calculate the event horizons and derive the equations of motion and effective potential in black hole geometries with different dark matter halos. We then compute the specific energy, specific angular momentum, and angular velocity of particles moving along circular orbits. We also derive the effective potentials to find the locations of the innermost stable circular orbit (ISCO) and compare them to the Schwarzschild and Kerr black holes without the dark matter halos. We also use the observed ISCO of the supermassive black hole at the Galactic Center of the Milky Way, Sagittarius A*, to constrain the dark matter halos.
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页数：13
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